CN213583877U - Cooling unit and fuel cell system - Google Patents
Cooling unit and fuel cell system Download PDFInfo
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- CN213583877U CN213583877U CN202023122572.7U CN202023122572U CN213583877U CN 213583877 U CN213583877 U CN 213583877U CN 202023122572 U CN202023122572 U CN 202023122572U CN 213583877 U CN213583877 U CN 213583877U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model relates to a fuel cell system technical field specifically relates to a cooling unit and fuel cell system. The cooling unit includes pumping installations, has heat transfer channel's fuel cell and is used for circulating first branch road and the second branch road of coolant liquid, is equipped with the overflow jar on the first branch road, is equipped with the heat sink on the second branch road, the both ends opening of heat transfer channel respectively with the import and the export intercommunication of first branch road, the both ends opening of heat transfer channel respectively can break-make ground with the import and the export intercommunication of second branch road, pumping installations can: the coolant is caused to flow between the fuel cell and the first branch, or the coolant is caused to flow between the fuel cell and the first branch and between the fuel cell and the second branch simultaneously. This cooling unit is equipped with first branch road and second branch road, and the coolant liquid of being convenient for forms different circulation return circuits according to the actual demand, has satisfied cooling unit's diversified demand, and regulation and control is more rapid, and is safe energy-conserving again.
Description
Technical Field
The utility model relates to a fuel cell system technical field specifically relates to a cooling unit and fuel cell system.
Background
The cooling unit of the fuel cell system is used for adjusting the operating temperature of the fuel cell so as to ensure that the fuel cell has good power output under different working conditions. The cooling unit of the fuel cell system is generally formed by connecting the fuel cell, the water pump, the overflow tank, the radiator, the thermostatic valve, and the like in series to form a single circuit, so that the cooling liquid can circulate in the circuit to cool the fuel cell.
However, many devices in the cooling unit of the existing fuel cell system are arranged in the same loop, so that the whole loop is complicated, the flow resistance of the cooling liquid is increased, and the regulation and control reaction is slow.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a cooling unit and a fuel cell system to solve the problem that the cooling unit of the fuel cell system in the prior art adopts a single loop to cause slow regulation and control reaction.
In order to achieve the above object, the utility model provides an aspect provides a cooling unit, cooling unit includes fuel cell, pumping installations and is used for circulating first branch road and the second branch road of coolant liquid, fuel cell has the circulation the heat transfer passageway of coolant liquid so that the coolant liquid carries fuel cell's heat, be provided with on the first branch road and be used for the supply the overflow tank of coolant liquid, it can be right to be provided with on the second branch road the heat sink of coolant liquid cooling, in order to scatter and disappear the heat that the coolant liquid carried, heat transfer passageway's both ends opening respectively with the import and the export intercommunication of first branch road, and heat transfer passageway's both ends opening respectively can break-make with the import and the export intercommunication of second branch road, pumping installations sets up to: the coolant can be caused to circulate between the fuel cell and the first branch, or the coolant can be caused to circulate simultaneously between the fuel cell and the first branch and between the fuel cell and the second branch.
Optionally, the second branch includes a first pipe and a second pipe arranged in parallel, the temperature reducing device is arranged on the first pipe, and an inlet and an outlet of the second branch are selectively communicated with the first pipe or the second pipe, so that the cooling liquid flowing into the second branch can flow through the second pipe or the temperature reducing device on the first pipe.
Optionally, the fuel cell may provide power for the engineering machine, and the cooling unit includes a control unit, and the control unit is configured to control the on/off of the first pipe and the second pipe according to a running speed of the engineering machine at an operation stage of the engineering machine.
Optionally, the first branch has a heat exchanger, the heat exchanger has a first channel and a second channel, the first channel is communicated with the first branch to circulate the cooling liquid on the first branch, and the second channel can circulate external air and absorb heat carried by the cooling liquid in the first channel through the air.
Optionally, the heat exchanger is arranged to transfer heat carried by the coolant to air surrounding the heat exchanger to form warm air.
Optionally, the cooling unit comprises an air blowing device, and the air blowing device is configured to blow the warm air around the heat exchanger to form warm air.
Optionally, the fuel cell may provide power for the engineering machine, and the first branch is provided with a heater, and the heater is configured to heat the coolant flowing through the first branch in a start-up stage of the engineering machine.
Optionally, the cooling unit includes a control unit and a temperature sensor, the temperature sensor is configured to be able to detect a temperature of the cooling liquid at an outlet of the heat exchange channel, the control unit is electrically connected to the temperature sensor and the heater, respectively, and the control unit is configured to be able to control an operation condition of the heater at the start-up stage according to temperature information provided by the temperature sensor.
Optionally, a deionizer is disposed on the first branch, and the deionizer is configured to be capable of deionizing the coolant flowing through the first branch.
Another aspect of the present invention provides a fuel cell system, which includes the cooling unit.
Through the technical scheme, the cooling unit is provided with the first branch and the second branch, and the pumping device can pump the cooling liquid in the fuel cell to the first branch or simultaneously pump the cooling liquid to the first branch and the second branch according to different actual requirements (for example, whether the cooling liquid needs to be subjected to cooling treatment by the cooling device or not), so that the diversified requirements of the cooling unit are met; especially, the pumping device pumps the cooling liquid in the fuel cell to the first branch circuit only, so that the cooling liquid in the fuel cell can not flow through the cooling device on the second branch circuit when the cooling treatment is not needed, the first branch circuit is obviously simplified, the whole loop of the cooling unit is simplified, the regulation and control reaction is rapid, and the device is safe and energy-saving.
Drawings
Fig. 1 is a schematic structural diagram of a cooling unit provided in the present application, wherein the schematic structural diagram of the cooling unit in a normal operation stage (or the schematic structural diagram of the cooling unit in a start-up stage) is shown;
FIG. 2 is a schematic illustration of another cooling unit provided herein, wherein the cooling unit is shown in an idle operating phase;
fig. 3 is a schematic structural diagram of another cooling unit provided by the present application, wherein the schematic structural diagram of the cooling unit in a high-speed operation stage is shown.
Description of the reference numerals
1. A fuel cell; 2. a pumping device; 3. a first branch; 4. an overflow tank; 5. a heat exchanger; 6. a heater; 7. a deionizer; 8. a second branch circuit; 9. a first tube; 10. a cooling device; 11. a second tube; 12. an exhaust line; 13. a fan; a. a first valve; b. a second valve; c. a third valve; d. a fourth valve; e. a fifth valve; f. and (4) switching.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
An aspect of the present invention provides a cooling unit, as shown in fig. 1-3, the cooling unit includes fuel cell 1, pumping device 2 and is used for circulating first branch 3 and second branch 8 of coolant liquid, fuel cell 1 has the circulation the heat transfer passageway of coolant liquid so that the coolant liquid carries the heat of fuel cell 1, be provided with on first branch 3 and be used for the supply the overflow jar 4 of coolant liquid, it can be right to be provided with on second branch 8 the heat sink 10 of coolant liquid cooling, in order to scatter and disappear the heat that the coolant liquid carried, heat transfer passageway's both ends opening respectively with the import and the export intercommunication of first branch 3, and the both ends opening of heat transfer passageway respectively can break-make ground with the import and the export intercommunication of second branch 8, pumping device 2 sets up to: the circulation of the coolant between the fuel cell 1 and the first branch passage 3 can be caused, or the circulation of the coolant between the fuel cell 1 and the first branch passage 3 and between the fuel cell 1 and the second branch passage 8 can be caused simultaneously.
The heat exchange channel of the fuel cell 1 may be in on-off communication with the inlet and the outlet of the second branch 8 through a first valve a and a third valve c, specifically, the first valve a and the third valve c may be in various forms, for example, may be a valve set, or may be a three-way valve as shown in fig. 1 to 3. Further, the fuel cell 1 may be provided in various forms, for example, the fuel cell 1 includes a housing and a fuel cell stack, the fuel cell stack is disposed in the housing, a gap between the housing and the fuel cell stack is a heat exchange channel, and the housing has an inlet and an outlet, i.e., an inlet and an outlet of the heat exchange channel. It should be noted that the cooling device 10 may be in various forms, for example, may be a radiator, and in order to optimize the cooling effect of the cooling device 10, the fan 13 may also be configured, so that the fan 13 can blow heat at the radiator to the external environment; the overflow tank 4 may be disposed at the highest point of the cooling unit, and may receive air bubbles in the pipe of the first branch on the premise of ensuring that a proper amount of cooling liquid is always circulated in the cooling unit, and may exhaust air to the outside periodically when the internal pressure of the overflow tank 4 reaches a threshold value.
Through the technical scheme, the cooling unit is provided with the first branch 3 and the second branch 8, and the pumping device 2 can pump the cooling liquid in the fuel cell 1 to the first branch 3 or simultaneously to the first branch 3 and the second branch 8 according to different actual requirements (for example, whether the cooling liquid needs to be subjected to cooling treatment by the cooling device 10), so that the diversified requirements of the cooling unit are met; particularly, under the condition that the cooling liquid in the fuel cell 1 does not need cooling treatment, the cooling liquid in the cooling unit only circularly flows in the first branch 3, so that the cooling liquid does not need to flow through the cooling device 10, the whole loop of the cooling unit is obviously simplified, the regulation and control speed is increased on the premise of meeting the use requirement of the fuel cell 1, and the fuel cell is safe and energy-saving.
Further, as shown in fig. 2 and 3, the second branch 8 includes a first pipe 9 and a second pipe 11 that are arranged in parallel, the cooling device 10 is disposed on the first pipe 9, an inlet and an outlet of the second branch 8 are selectively communicated with the first pipe 9 or the second pipe 11, so that the cooling liquid flowing into the second branch 8 can flow through the second pipe 11 or the cooling device 10 on the first pipe 9, and the cooling unit can meet cooling requirements of the fuel cell 1 under different working conditions, thereby providing a powerful guarantee for stable operation of the fuel cell 1 under different working conditions, reducing operation cost of the cooling unit, and being safe and energy-saving. As shown in fig. 2 and 3, the inlet of the second branch 8 can be selectively communicated with the first pipe or the second pipe 9 through a fourth valve d, and the outlet of the second branch 8 can be selectively communicated with the first pipe or the second pipe 9 through a fifth valve e, wherein the fourth valve d and the fifth valve e can be provided in various forms, for example, can be provided as a valve group, or can also be provided as a three-way valve.
In order to realize the circulation path of the cooling liquid in the intelligent control cooling unit, the fuel cell 1 can provide power for the engineering machinery, the cooling unit comprises a control unit, the control unit is set to be capable of controlling the on-off of the first pipe 9 and the second pipe 11 according to the running speed of the engineering machinery in the running stage of the engineering machinery, the structure is simple, the operation is convenient, and the energy-saving running of the cooling unit and the cooling requirement of the fuel cell 1 are also considered. It is worth mentioning that the working machine may be in various forms, for example, a boat, a vehicle, etc.
As will be exemplified below by a vehicle, the vehicle is generally provided with a vehicle speed sensor in a cab, the vehicle speed sensor can detect the running speed of the vehicle in real time, the control unit can be electrically connected with the vehicle speed sensor, and the control unit is configured to convert the running speed detected by the vehicle sensor into a vehicle speed signal and control the on-off of the first pipe 9 and the second pipe 11 according to the vehicle speed signal, so that the structure is simpler, the existing structure of the vehicle is fully utilized, and the design cost of the cooling unit is reduced. The control unit may be in various forms, and may be, for example, an ECU control system in a vehicle.
As a power source of a vehicle, the fuel cell 1 can provide power for the vehicle to run, but the fuel cell 1 releases a large amount of heat when in use, and a temperature rise phenomenon occurs, so that the fuel cell 1 is easy to malfunction and even explode. In order to ensure safe operation of the fuel cell 1, the vehicle is generally provided with a cooling unit to cool the fuel cell 1 and prevent the fuel cell 1 from malfunctioning due to excessive temperature. Generally, the output power of the fuel cell 1 is different in the operation stage of the vehicle because the vehicle has different operating conditions. On the premise of meeting the cooling requirement of the fuel cell 1, in order to enable the cooling unit to operate in an energy-saving manner, the cooling unit can design different circulation paths for the cooling liquid according to the actual cooling requirement of the fuel cell 1.
According to some embodiments of the present invention, when the vehicle is running normally, for example, the running speed of the vehicle detected by the vehicle speed sensor is 20km/h-60km/h, i.e. the running power of the fuel cell 1 is normal, and the heat generation is normal, at this time, the cooling requirement of the fuel cell 1 can be satisfied by the devices such as the overflow tank 4 on the first branch 3. Specifically, as shown in fig. 1, the control unit controls the first valve a to communicate with the outlet of the fuel cell 1 and the first branch 3 and disconnect the outlet of the fuel cell 1 and the second branch 8, and controls the third valve c to communicate with the inlet of the fuel cell 1 and the first branch 3 and disconnect the inlet of the fuel cell 1 and the second branch 8, so that the pumping device 2 can promote the cooling liquid to circulate between the fuel cell 1 and the first branch 3 to cool the fuel cell 1 without additionally delivering the cooling liquid to the second branch 8, the operation power of the pumping device is reduced, the cooling device does not need to be started, and the use cost is low.
When the vehicle is running at a high speed, for example, the vehicle speed sensor detects that the running speed of the vehicle is greater than 60km/h, that is, the running power of the fuel cell 1 is increased, and heat is generated more, at this time, the equipment such as the overflow tank 4 on the first branch 3 cannot meet the cooling requirement of the fuel cell 1, and the fuel cell 1 needs to be cooled by the cooling device 10. Specifically, as shown in fig. 3, the control unit controls the first valve a to simultaneously communicate the outlet of the fuel cell 1 with the first branch 3 and the second branch 8, controls the third valve c to simultaneously communicate the inlet of the fuel cell 1 with the first branch 3 and the second branch 8, controls the fourth valve d to communicate the inlet of the second branch 8 with the first pipe 9 having the temperature reducing device 10 and to disconnect the inlet of the second branch 8 from the second pipe 11, controls the fifth valve e to communicate the outlet of the second branch 8 with the first pipe 9 having the temperature reducing device 10 and to disconnect the outlet of the second branch 8 from the second pipe 11, so that the pumping device 2 can cause the coolant to simultaneously circulate between the fuel cell 1 and the first branch 3 and between the fuel cell 1 and the first pipe 9 having the temperature reducing device 10 (for example, the circulation amount of the coolant between the fuel cell 1 and the first pipe 9 may be larger than the circulation amount of the coolant between the fuel cell 1 and the first branch 3), each device on the first branch and the cooling device 10 on the second branch can cool the fuel cell 1 at the same time, and the cooling requirement of the fuel cell 1 with high-power operation is met. In order to prevent the coolant from being mixed with many bubbles, the exhaust port of the temperature lowering device 10 communicates with the overflow tank 4 through the exhaust line 12 to release the gas mixed with the coolant in the temperature lowering device 10. Further, the exhaust line 12 may communicate with the first branch line 3 through a second valve b, wherein the second valve b may be configured as a valve bank or a three-way valve. Specifically, when the vehicle runs normally or at an idle speed, the control unit controls the second valve b to disconnect the first branch 3 from the exhaust pipe 12, and when the vehicle runs at a high speed, the control unit controls the second valve b to connect the first branch 3 with the exhaust pipe 12.
When the vehicle runs at idle speed, for example, the running speed of the vehicle is detected by the vehicle speed sensor to be less than 20km/h, that is, the running power of the fuel cell 1 is reduced, and heat generation is less, at this time, the equipment such as the overflow tank 4 on the first branch 3 greatly meets the cooling requirement of the fuel cell 1, in order to reduce the running cost of the cooling unit, the cooling liquid needs to be split, specifically, a part of the cooling liquid flows through the first branch 3 for cooling, and the rest of the cooling liquid circulates through the second pipe 11 of the second branch 8 without additional cooling. Specifically, as shown in fig. 2, the control unit controls the first valve a to simultaneously communicate the outlet of the fuel cell 1 with the first branch 3 and the second branch 8, controls the third valve c to simultaneously communicate the inlet of the fuel cell 1 with the first branch 3 and the second branch 8, controls the fourth valve d to communicate the inlet of the second branch 8 with the second pipe 11 and to disconnect the inlet of the second branch 8 from the first pipe 9 having the temperature reducing device 10, controls the fifth valve e to communicate the outlet of the second branch 8 with the second pipe 11 and to disconnect the outlet of the second branch 8 from the first pipe 9 having the temperature reducing device 10, so that the pumping device 2 can cause the coolant to simultaneously circulate between the fuel cell 1 and the first branch 3 and between the fuel cell 1 and the second pipe 11 (for example, the circulation amount of the coolant between the fuel cell 1 and the second pipe 11 may be larger than the circulation amount of the coolant between the fuel cell 1 and the first branch 3), the cooling unit only cools part of the cooling liquid flowing through the fuel cell 1 through each device on the first branch, so that the cooling requirement of the fuel cell 1 in low-power operation is met, the operating power of the pumping device is reduced, and the use cost is low.
In order to increase the effective utilization of the heat generated by the fuel cell 1, the first branch 3 has a heat exchanger 5, and the heat exchanger 5 has a first passage communicating with the first branch 3 to circulate the coolant on the first branch 3 and a second passage capable of circulating an external gas and absorbing the heat carried by the coolant in the first passage by the gas. The external gas can be derived from various forms, for example, the external gas can be hydrogen, and the hydrogen is derived from a hydrogen source (for example, a hydrogen tank or other devices) in the fuel cell system, and by providing the heat exchanger 5 on the first branch line 3, the cooling liquid in the cooling unit can transfer the heat generated by the fuel cell 1 (i.e., the heat generated by the fuel cell stack) to the hydrogen source in the fuel cell system, so that the fuel cell system is energy-saving and efficient, has low cost, and also ensures stable operation of the fuel cell system.
In order to further improve the effective utilization rate of the heat generated by the fuel cell 1, the heat exchanger 5 is configured to transfer the heat carried by the coolant to the air around the heat exchanger 5 to form warm air, so that the heat exchanger 5 can provide warm air to the cab of the vehicle, and the user experience of passengers is optimized. It can be understood that the heat exchanger 5 of the cooling unit is communicated with the cab through the ventilation window, so that the opening area of the ventilation window is changed according to the actual temperature in the cab to adjust the heating air supply quantity of the heat exchanger 5, and further adjust the temperature in the cab, for example, in winter or in low-temperature weather such as bad weather, the temperature in the cab is low (for example, lower than 25 ℃), the ventilation window can be opened through the switch f, so that the heating air around the heat exchanger 5 is circulated into the cab to be heated, the cab can reach an appropriate temperature as much as possible, the riding experience of passengers is optimized, the heat generated by the fuel cell 1 is fully utilized, and the heating cost of the cab through an electric heating mode is reduced; in summer or in high-temperature weather such as sunny weather, the temperature of the cab is higher (for example, higher than 25 ℃), and the ventilation window can be closed through the switch f. The heat exchanger 5 can be in various forms, for example, the heat exchanger 5 is provided with a fin-type structure, the structure is simple, the contact area between the heat exchanger 5 and the ambient air is enlarged, and the amount of warm air generated by the heat exchanger 5 is increased.
Further, the cooling unit includes blast apparatus, blast apparatus sets up to blow around the heat exchanger 5 heating installation is in order to form the warm braw, is favorable to the heating installation around the heat exchanger 5 to flow into the driver's cabin fast, has improved the rate of heating up of driver's cabin, and regulation and control is more rapid, has optimized passenger's the experience of taking.
It is known that, during a starting phase of a construction machine (for example, a starting phase of a vehicle, specifically, a starting phase of the vehicle is before a running phase of the vehicle), when the temperature of a cooling unit of the vehicle is too low in winter or in low-temperature weather such as bad weather, the cooling unit of the vehicle is not easy to start or slow to start because the temperature of the cooling liquid is too low. In order to solve the above problem, the fuel cell 1 is capable of providing power for a construction machine (e.g. a vehicle), the first branch 3 is provided with a heater 6, and the heater 6 is configured to heat the coolant flowing through the first branch 3 during a start-up phase of the construction machine, so that the fuel cell can reach an optimal operating temperature quickly, and the start-up efficiency of the cooling unit is accelerated.
Further, the cooling unit comprises a control unit and a temperature sensor, the temperature sensor is arranged to be capable of detecting the temperature of the cooling liquid at the outlet of the heat exchange channel, the control unit is electrically connected with the temperature sensor and the heater 6 respectively, and the control unit is arranged to be capable of controlling the operation condition of the heater 6 at the starting stage according to the temperature information provided by the temperature sensor, so that the control unit can control whether the heater needs to be started at the starting stage of the vehicle according to the actual temperature of the cooling liquid, and the starting of the intelligent control cooling unit is realized.
In order to prevent unnecessary dissipation of the cooling liquid in the cooling unit (for example, at the temperature reducing means 10 of the first pipe 9 or at the second pipe 11) during the starting phase of the vehicle, the cooling liquid of the cooling unit only needs to circulate between the fuel cell 1 and the first branch 3 without flowing through the second branch 8 additionally. Specifically, when the external temperature is low (for example, lower than 0 ℃), the starting phase of the vehicle may be referred to as a cold starting phase of the vehicle, the temperature sensor detects that the temperature of the coolant discharged from the fuel cell 1 is low, the control unit controls the heater 6 to be turned on to heat the coolant flowing through the first branch line 3, meanwhile, the coolant can be heated by the fuel cell 1 through self-heating, which is beneficial to rapidly increasing the temperature of the coolant, and the heat exchanger 5 transfers part of the heat of the coolant to the cab through warm air to increase the temperature in the cab, so as to optimize the riding experience of passengers. When the outside temperature is appropriate (for example, higher than 0 ℃), the start-up phase of the vehicle may be referred to as a normal start-up phase of the vehicle, the temperature sensor detects that the temperature of the coolant discharged from the fuel cell 1 is appropriate, the control unit controls the heater 6 to be turned off, the coolant can be heated quickly under the self-heating action of the fuel cell 1 without an additional heating process by means of the heater 6, and: when the temperature of the cab is low (for example, lower than 25 ℃), the cab needs to be heated by warm air of the heat exchanger 5, and the switch f is turned on, so that warm air of the heat exchanger 5 can smoothly flow into the cab for heating, and the riding experience of passengers is optimized; when the temperature of the cab is high (for example, higher than 25 ℃), the cab is not heated by the warm air of the heat exchanger 5, and the switch f is turned off.
Further, a deionizer 7 is arranged on the first branch 3, and the deionizer 7 is configured to be capable of deionizing the cooling liquid flowing through the first branch 3, so as to reduce the electrical conductivity inside the cooling unit, thereby maintaining a safe insulation resistance of the cooling unit. Furthermore, on the first branch 3, the heater 6 and the heat exchanger 5 are arranged on the upstream side of the deionizer 7, and ions in the cooling liquid (wherein the part of ions also comprises ions precipitated by the heater 6 and the heat exchanger 5) flow through the deionizer, so that the risk of the cooling unit generating an alarm with excessive ion content and insulation resistance is reduced.
The second aspect of the present invention also provides a fuel cell system, which includes the cooling unit. It is worth mentioning that the fuel cell system may further include a hydrogen source and an oxygen source to supply the fuel cell 1 with hydrogen and oxygen, thereby ensuring the normal operation of the fuel cell 1.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. Cooling unit, characterized in that it comprises a fuel cell (1), pumping means (2) and a first branch (3) and a second branch (8) for circulating a cooling liquid, the fuel cell (1) is provided with a heat exchange channel for circulating the cooling liquid so that the cooling liquid carries the heat of the fuel cell (1), an overflow tank (4) for supplying the cooling liquid is arranged on the first branch (3), a cooling device (10) capable of cooling the cooling liquid is arranged on the second branch (8), so as to dissipate the heat carried by the cooling liquid, the openings at the two ends of the heat exchange channel are respectively communicated with the inlet and the outlet of the first branch (3), and openings at two ends of the heat exchange channel are respectively communicated with an inlet and an outlet of the second branch (8) in a switching way, and the pumping device (2) is arranged as follows: the circulation of the cooling liquid between the fuel cell (1) and the first branch (3) can be caused, or the circulation of the cooling liquid between the fuel cell (1) and the first branch (3) and between the fuel cell (1) and the second branch (8) can be caused simultaneously.
2. The cooling unit according to claim 1, wherein the second branch (8) comprises a first pipe (9) and a second pipe (11) arranged in parallel, the temperature reducing device (10) is arranged on the first pipe (9), and an inlet and an outlet of the second branch (8) are selectively communicated with the first pipe (9) or the second pipe (11), so that the cooling liquid flowing into the second branch (8) can flow through the second pipe (11) or the temperature reducing device (10) on the first pipe (9).
3. A cooling unit according to claim 2, characterised in that the fuel cell (1) is capable of powering a working machine, the cooling unit comprising a control unit arranged to be able to control the switching of the first and second pipes (9, 11) in dependence of the travelling speed of the working machine during an operational phase of the working machine.
4. A cooling unit according to any one of claims 1-3, characterized in that the first branch (3) has a heat exchanger (5), the heat exchanger (5) having a first channel communicating with the first branch (3) for circulating the cooling liquid on the first branch (3) and a second channel capable of circulating an external gas and absorbing by the gas the heat carried by the cooling liquid inside the first channel.
5. A cooling unit according to claim 4, characterised in that the heat exchanger (5) is arranged to be able to transfer heat carried by the cooling liquid to the air surrounding the heat exchanger (5) to form warm air.
6. A cooling unit according to claim 5, characterised in that the cooling unit comprises blowing means arranged to be able to blow the warm air around the heat exchanger (5) to form warm air.
7. A cooling unit according to claim 1, characterised in that the fuel cell (1) is adapted to powering a working machine, and that a heater (6) is arranged on the first branch (3), which heater (6) is adapted to heating the cooling liquid flowing through the first branch (3) during a start-up phase of the working machine.
8. Cooling unit according to claim 7, characterized in that the cooling unit comprises a control unit and a temperature sensor, the temperature sensor is arranged to be able to detect the temperature of the cooling liquid at the outlet of the heat exchanging channel, the control unit is electrically connected with the temperature sensor and the heater (6), respectively, the control unit is arranged to be able to control the operation of the heater (6) during the start-up phase depending on the temperature information provided by the temperature sensor.
9. A cooling unit according to claim 1, characterized in that a deionizer (7) is arranged on the first branch (3), which deionizer (7) is arranged to be able to deionize the cooling liquid flowing through the first branch (3).
10. A fuel cell system characterized by comprising the cooling unit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023122572.7U CN213583877U (en) | 2020-12-22 | 2020-12-22 | Cooling unit and fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023122572.7U CN213583877U (en) | 2020-12-22 | 2020-12-22 | Cooling unit and fuel cell system |
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| Publication Number | Publication Date |
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| CN213583877U true CN213583877U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023122572.7U Active CN213583877U (en) | 2020-12-22 | 2020-12-22 | Cooling unit and fuel cell system |
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| CN (1) | CN213583877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114188564A (en) * | 2021-12-09 | 2022-03-15 | 中国人民解放军32181部队 | Heat extraction system of fuel cell |
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2020
- 2020-12-22 CN CN202023122572.7U patent/CN213583877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114188564A (en) * | 2021-12-09 | 2022-03-15 | 中国人民解放军32181部队 | Heat extraction system of fuel cell |
| CN114188564B (en) * | 2021-12-09 | 2024-06-07 | 中国人民解放军32181部队 | Heat extraction system of fuel cell |
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